# @HEADER
# ************************************************************************
#
#            Trilinos: An Object-Oriented Solver Framework
#                 Copyright (2001) Sandia Corporation
#
#
# Copyright (2001) Sandia Corporation. Under the terms of Contract
# DE-AC04-94AL85000, there is a non-exclusive license for use of this
# work by or on behalf of the U.S. Government.  Export of this program
# may require a license from the United States Government.
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# @HEADER


SET(REQUIRED_LIBS_NAMES "blas blas_win32")

#
# Second, search for BLAS components (if allowed) using the standard
# FIND_PACKAGE(BLAS ...).
#
TRIBITS_TPL_ALLOW_PRE_FIND_PACKAGE(BLAS  BLAS_ALLOW_PREFIND)
IF (BLAS_ALLOW_PREFIND)

  MESSAGE("-- Using FIND_PACKAGE(BLAS ...) ...")

  FIND_PACKAGE(BLAS)

  IF (BLAS_FOUND)
    # Tell TriBITS that we found BLAS and there no need to look any further!
    SET(TPL_BLAS_INCLUDE_DIRS "" CACHE PATH
      "BLAS include dirs")
    SET(TPL_BLAS_LIBRARIES ${BLAS_LIBRARIES} CACHE FILEPATH
      "BLAS libraries")
    SET(TPL_BLAS_LIBRARY_DIRS "" CACHE PATH
      "BLAS library dirs")
  ENDIF()

ENDIF()

IF (MSVC AND NOT
    (BLAS_LIBRARY_DIRS  OR
     (NOT "${BLAS_LIBRARY_NAMES}" STREQUAL "blas blas_win32" AND
      NOT "${BLAS_LIBRARY_NAMES}" STREQUAL "") OR
     BLAS_INCLUDE_DIRS  OR
     BLAS_INCLUDE_NAMES OR
     (NOT "${TPL_BLAS_LIBRARIES}" STREQUAL "blas" AND
      NOT "${TPL_BLAS_LIBRARIES}" STREQUAL "") OR
     TPL_BLAS_INCLUDE_DIRS)
   )
  # Find the CLAPACK built by CMake on the machine for MSVC if found it will
  # set the BLAS and LAPACK libraries.  NOTE: This the FindCLAPACK module must
  # be called every configure or this does not work!
  # If the user has specified alternate name or location of their blas that
  # will be used instead.
  FIND_PACKAGE(CLAPACK 3.2.1 NO_MODULE)
  IF (CLAPACK_FOUND)
    ADVANCED_SET(TPL_BLAS_LIBRARIES blas
      CACHE FILEPATH "Set from MSVC CLAPACK specialization")
  ENDIF()
ENDIF()
#
# Third, call TRIBITS_TPL_FIND_INCLUDE_DIRS_AND_LIBRARIES()
#
TRIBITS_TPL_FIND_INCLUDE_DIRS_AND_LIBRARIES( BLAS
  REQUIRED_LIBS_NAMES ${REQUIRED_LIBS_NAMES}
  )
# NOTE: If FIND_PACKAGE(BLAS ...) was called and successfully found BLAS, then
# TRIBITS_TPL_FIND_INCLUDE_DIRS_AND_LIBRARIES() will use the already-set
# variables TPL_BLAS_INCLUDE_DIRS and TPL_BLAS_LIBRARIES and then print them
